//
// Created by Zhang on 2021/3/31.
//

#ifndef WZH_Q21_H
#define WZH_Q21_H

#endif //WZH_Q21_H

int sum_matrix(int **matrix, int n);

int **create_matrix(int n);

void free_matrix(int **p, int n);

int unit_test_21(int n);
